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Determination of the pKa for A) solid IPA/NO dissolved in 10 mL of cold nanopure water to produce a 10 mM solution or B) a 10 mM solution of IPA/NO in 10 mM NaOH. Solutions were immediately titrated with cold 10 mM HCl while on ice to limit decomposition. The titration curves showing the first neutralization of IPA/NO are representative of three trials.
